| abstract |
(57) [Summary] [Objective] A hydridocarbonyltris (triorganophosphorus) rhodium compound is directly produced from a distillation residue containing a rhodium catalyst after a hydroformylation reaction (oxo synthesis). [Structure] Using the rhodium compound contained in the hydroformylation reaction distillation residue as a starting material, the deactivated rhodium catalyst compound-containing distillation residue is treated with an oxidizing agent, and then in the presence of a mixed gas of carbon monoxide and oxygen. Is converted into a rhodium-carbonyl compound by directly reacting with a hydroxyl group-containing compound, alkali metal hydroxide, formaldehyde and triorganophosphorus ligand without isolation from the reaction solution, and post-treatment with carbon monoxide and hydrogen. |